An oven stove, one variant is known as a kakelugn in Sweden, is the most efficient house heater available to man.
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One family's fight for independence, building an ecological house (EcoHouse, EkoHus in Swedish) for $15'000.
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An Icelandic house that uses geothermal energy and secondhand construction materials. No news if the grand piano is emission-friendly. Via inhabitat
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